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Method for preparing aluminum oxide-silicon carbide-carbon series refractory raw material by using secondary aluminum ash as raw material
The invention provides a method for preparing an aluminum oxide-silicon carbide-carbon series refractory raw material by using secondary aluminum ash as a raw material, and particularly relates to the technical field of secondary aluminum ash treatment. The method comprises the steps: adding secondary aluminum ash into water, and preparing a mixed solution; filtering the mixed solution to obtain filter residues; washing and drying filter residues to obtain secondary aluminum ash pretreatment powder; then adding the secondary aluminum ash pretreatment powder, carbonized rice husks and corundum balls into a planetary ball mill for ball milling to obtain mixed fine powder; uniformly stirring the mixed fine powder, aluminum sol and water to obtain pug; adding the pug into a sugarcoating machine to prepare prefabricated particles; and finally, baking and carrying out heat treatment on the prefabricated particles under the reducing atmosphere condition, and obtaining a target product. The method is high in secondary aluminum ash utilization rate and low in production cost; and the refractory aggregate is high in volume density, low in porosity and small in reheating linear change.
本发明提供一种利用二次铝灰为原料制备氧化铝‑碳化硅‑碳系耐火原料的方法，具体涉及二次铝灰处理技术领域，先将二次铝灰加入到水中，制得混合液；将混合液经过滤得到滤渣；再将滤渣洗涤、干燥，得到二次铝灰预处理粉；然后将二次铝灰预处理粉、碳化稻壳和刚玉球加入到行星球磨机中进行球磨得到混合细粉；再将混合细粉、铝溶胶和水搅拌均匀，制得泥料；将泥料加入糖衣机中，制得预制粒；最后将预制粒先经过烘烤，然后在还原气氛条件下热处理，获得目标产品；本发明二次铝灰利用率高和生产成本低；耐火骨料体积密度大、气孔率低和重烧线变化小。
Method for preparing aluminum oxide-silicon carbide-carbon series refractory raw material by using secondary aluminum ash as raw material
The invention provides a method for preparing an aluminum oxide-silicon carbide-carbon series refractory raw material by using secondary aluminum ash as a raw material, and particularly relates to the technical field of secondary aluminum ash treatment. The method comprises the steps: adding secondary aluminum ash into water, and preparing a mixed solution; filtering the mixed solution to obtain filter residues; washing and drying filter residues to obtain secondary aluminum ash pretreatment powder; then adding the secondary aluminum ash pretreatment powder, carbonized rice husks and corundum balls into a planetary ball mill for ball milling to obtain mixed fine powder; uniformly stirring the mixed fine powder, aluminum sol and water to obtain pug; adding the pug into a sugarcoating machine to prepare prefabricated particles; and finally, baking and carrying out heat treatment on the prefabricated particles under the reducing atmosphere condition, and obtaining a target product. The method is high in secondary aluminum ash utilization rate and low in production cost; and the refractory aggregate is high in volume density, low in porosity and small in reheating linear change.
本发明提供一种利用二次铝灰为原料制备氧化铝‑碳化硅‑碳系耐火原料的方法，具体涉及二次铝灰处理技术领域，先将二次铝灰加入到水中，制得混合液；将混合液经过滤得到滤渣；再将滤渣洗涤、干燥，得到二次铝灰预处理粉；然后将二次铝灰预处理粉、碳化稻壳和刚玉球加入到行星球磨机中进行球磨得到混合细粉；再将混合细粉、铝溶胶和水搅拌均匀，制得泥料；将泥料加入糖衣机中，制得预制粒；最后将预制粒先经过烘烤，然后在还原气氛条件下热处理，获得目标产品；本发明二次铝灰利用率高和生产成本低；耐火骨料体积密度大、气孔率低和重烧线变化小。
Method for preparing aluminum oxide-silicon carbide-carbon series refractory raw material by using secondary aluminum ash as raw material
一种利用二次铝灰为原料制备氧化铝-碳化硅-碳系耐火原料的方法
2021-08-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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